Philip Seymour Hoffman had been clean for 23 years before a recent stay at a detox facility, which the Oscar winner is opening up about now.

His 10-day stay hadn't been reported, but the "Hunger Games" confirmed to TMZ on Thursday that he left the East Coast facility on May 24. He shared with the site that he had been clean for 23 years prior to the relapse, which began more than a year ago with a prescription pill problem and escalated to the actor snorting heroin.

He notes that he was snorting heroin for about a week before seeking treatment at the undisclosed center. He added "a great group of friends and family" helped him get better. He is reportedly back at work already, shooting his next project in Europe.

In an interview with "60 Minutes" in 2006, the actor opened up about his prior substance-abuse issues, which began shortly after he graduated from New York University. "It was anything I could get my hands on... I liked it all," he said at the time. "I went [to rehab], I got sober when I was 22 years old. You get panicked... and I got panicked for my life. It really was just that."

"The Master" actor, who won the Best Actor Oscar for his turn in 2006's "Capote," has a slate of projects lined up, including November's "Catching Fire," Anton Corbijn's "The Most Wanted Man" and "God's Pocket," which is being helmed by "Mad Men" star John Slattery.